PHP - Filtering Results Of A Previous Query

Last Christmas my wife bought me a book on html and css because I said that I have always wanted to write a website. Over the last 10 months I have really enjoyed learning web design and have progressed to try and learn php and using myPHPadmin databases.   I am now trying to write a private message function.

I've got a members database and a conversation database. I am trying to filter out whether a private message is 'read' or 'unread', but whatever I try it is still listing all messages under both options. I've spent 48 hours staring at this bit of code. Can anyone see what I have done wrong?

The relevant (and self-explanatory) fields from my members database a
id
username
member_first_name
member_last_name

The relevant fields from my conversation database a
id
id2 (always set as '1' to count messages in a conversation)
member1 (the initial sender of the first message)
member2 (the initial recipient of the first message)
read1 (member1 has read this message default to yes when message sent and to no when message received)
read2 (member2 has read this message default to yes when message sent and to no when message received)
removed1 (member1 has deleted this message from their record)
removed2 (member2 has deleted this message from their record)
time (timestamp)
 

<?php
$query1 = DB::getInstance()->query("SELECT c1.id, c1.title, c1.time, c1.removed1, c1.removed2, count(c2.id) AS reps, 
                    m.id as memberid, m.username m.member_first_name, m.member_last_name
                    FROM conversation as c1, conversation as c2, members as m
                    WHERE ((c1.member1='{$logid}' AND c1.read1='No' AND c1.removed1='No'
                    AND m.id=c1.member2)
                    OR (c1.member2='{$logid}' AND c1.read2='No' AND c1.removed2='No'
                    AND m.id=c1.member1))
                    AND c1.id2='1' AND c2.id=c1.id
                    GROUP BY c1.id
                    ORDER BY c1.id DESC");
$query2 = DB::getInstance()->query("SELECT c1.id, c1.title, c1.time, c1.removed1, c1.removed2, count(c2.id) as reps, 
                    m.id as memberid, m.username, m.member_first_name, m.member_last_name
                    FROM conversation as c1, conversation as c2, members as m
                    WHERE ((c1.member1='{$logid}' AND c1.read1='Yes' AND c1.removed1='No'
                    AND m.id=c1.member2)
                    OR (c1.member2='{$logid}' AND c1.read2='Yes' AND c1.removed2='No' AND
                    m.id=c1.member1))
                    AND c1.id2='1' AND c2.id=c1.id
                    GROUP BY c1.id
                    ORDER BY c1.id DESC");
?>

UNREAD MESSAGES (<?php echo intval($query1->count()); ?>)
<br>
READ MESSAGES (<?php echo intval($query2->count()); ?>)

I've tried running through things in a logical path:   UNREAD MESSAGES member1 = logged in user read1 = No removed1 = No members.id = member2       OR member2 = logged in user read2 = No removed2 = No members.id = member1   READ MESSAGES member1 = logged in user read1 = Yes removed1 = No members.id = member2       OR member2 = logged in user read2 = Yes removed2 = No members.id = member1   I can't understand how if 'read1 = yes and the logged in user is member1, why they are being counted in the unread list.   Can anyone see what I have done wrong?
Edited by MartynLearnsPHP, 15 November 2014 - 08:05 AM.

Hello,

I need help filtering an SQL query based on the combination of drop down menus. I have tried using this code found in another thread but I am still getting all rows selected. Any ideas?? Thank you.

Here is my html
Code: [Select]
<form name="xml.php" method="POST">
            <input type="button" id="showmarkers" value="Show Markers" />&nbsp;&nbsp;
                <select name="meetingType">
                <option value="All Types" selected="All Types">All Types</option>           
                <option value="fun">fun</option>
                <option value="work">work</option>
                </select>&nbsp;&nbsp;
                <select name="meetingDay">
                <option value="All Days" selected="All Days">All Days</option>
                <option value="Monday">Monday</option>
                <option value="Tuesday">Tuesday</option>
                <option value="Wednesday">Wednesday</option>
                <option value="Thursday">Thursday</option>
                <option value="Friday">Friday</option>
                <option value="Saturday">Saturday</option>
                <option value="Sunday">Sunday</option>
                </select>&nbsp;&nbsp;
                <select name="meetingTime">
                <option value="All Times" selected="All Times">All Times</option>
                <option value="Early">Early</option>
                <option value="Noon">Noon</option>
                <option value="Late">Late</option>
                </select>
</form>

And the PHP:
Code: [Select]
$whereClauses = array();
if (! empty($_POST['meetingType'])) $whereClauses[] ="meetingType='".mysql_real_escape_string($_POST['meetingType'])."'";
if (! empty($_POST['meetingDay'])) $whereClauses[] ="meetingDay='".mysql_real_escape_string($_POST['meetingDay'])."'";
if (! empty($_POST['meetingTime'])) $whereClauses[] ="meetingTime='".mysql_real_escape_string($_POST['meetingTime'])."'";
$where = '';
if (count($whereClauses) > 0) { $where = ' WHERE '.implode(' AND ',$whereClauses); }
$resultID = mysql_query("SELECT * FROM meetings".$where);

This topic has been moved to MySQL Help.

http://www.phpfreaks.com/forums/index.php?topic=358872.0

Hello all,   Based on the suggestion of you wonderful folks here, I went away for a few days (to learn about PDO and Prepared Statements) in order to replace the MySQLi commands in my code. That's gone pretty well thus far...with me having learnt and successfully replaced most of my "bad" code with elegant, SQL-Injection-proof code (or so I hope).   The one-and-only problem I'm having (for now at least) is that I'm having trouble understanding how to execute an UPDATE query within the resultset of a SELECT query (using PDO and prepared statements, of course).   Let me explain (my scenario), and since a picture speaks a thousand words I've also inlcuded a screenshot to show you guys my setup:   In my table I have two columns (which are essentially flags i.e. Y/N), one for "items alreay purchased" and the other for "items to be purchased later". The first flag, if/when set ON (Y) will highlight row(s) in red...and the second flag will highlight row(s) in blue (when set ON).   I initially had four buttons, two each for setting the flags/columns to "Y", and another two to reverse the columns/flags to "N". That was when I had my delete functionality as a separate operation on a separate tab/list item, and that was fine.   Now that I've realized I can include both operations (update and delete) on just the one tab, I've also figured it would be better to pare down those four buttons (into just two), and set them up as a toggle feature i.e. if the value is currently "Y" then the button will set it to "N", and vice versa.   So, looking at my attached picture, if a person selects (using the checkboxes) the first four rows and clicks the first button (labeled "Toggle selected items as Purchased/Not Purchased") then the following must happen:   1. The purchased_flag for rows # 2 and 4 must be switched OFF (set to N)...so they will no longer be highlighted in red. 2. The purchased_flag for row # 3 must be switched ON (set to Y)...so that row will now be highlighted in red. 3. Nothing must be done to rows # 1 and 5 since: a) row 5 was not selected/checked to begin with, and b) row # 1 has its purchase_later_flag set ON (to Y), so it must be skipped over.   Looking at my code below, I'm guessing (and here's where I need the help) that there's something wrong in the code within the section that says "/*** loop through the results/collection of checked items ***/". I've probably made it more complex than it should be, and that's due to the fact that I have no idea what I'm doing (or rather, how I should be doing it), and this has driven me insane for the last 2 days...which prompted me to "throw in the towel" and seek the help of you very helpful and intellegent folks. BTW, I am a newbie at this, so if I could be provided the exact code, that would be most wonderful, and much highly appreciated.   Thanks to you folks, I'm feeling real good (with a great sense of achievement) after having come here and got the great advice to learn PDO and prepared statements.   Just this one nasty little hurdle is stopping me from getting to "end-of-job" on my very first WebApp. BTW, sorry about the long post...this is the best/only way I could clearly explaing my situation.   Cheers guys!

case "update-delete":
	if(isset($_POST['highlight-purchased'])) 
		{
			// ****** Setup customized query to obtain only items that are checked ******
			$sql = "SELECT * FROM shoplist WHERE";
					for($i=0; $i < count($_POST['checkboxes']); $i++)
						{
							$sql=$sql . " idnumber=" . $_POST['checkboxes'][$i] . " or";
						}
					$sql= rtrim($sql, "or");
											
			$statement = $conn->prepare($sql);
			$statement->execute();
																						
			// *** fetch results for all checked items (1st query) *** //
			$result = $statement->fetchAll();

			$statement->closeCursor();
											
			// Setup query that will change the purchased flag to "N", if it's currently set to "Y"
			$sqlSetToN = "UPDATE shoplist SET purchased = 'N' WHERE purchased = 'Y'";
											
			// Setup query that will change the purchased flag to "Y", if it's currently set to "N", "", or NULL
			$sqlSetToY = "UPDATE shoplist SET purchased = 'Y' WHERE purchased = 'N' OR purchased = '' OR purchased IS NULL";

			$statementSetToN = $conn->prepare($sqlSetToN);
			$statementSetToY = $conn->prepare($sqlSetToY);
											
			/*** loop through the results/collection of checked items ***/
			foreach($result as $row)
				{
					if ($row["purchased"] != "Y")
						{
							// *** fetch one row at a time pertaining to the 2nd query *** //
							$resultSetToY = $statementSetToY->fetch();
															
							foreach($resultSetToY as $row)
								{															
									$statementSetToY->execute();																
								}
						}
					else
						{
							// *** fetch one row at a time pertaining to the 2nd query *** //
							$resultSetToN = $statementSetToN->fetch();
															
							foreach($resultSetToN as $row)
								{															
									$statementSetToN->execute();																
								}
						}
				}
				break;
		}

 CRUD Queston.png   20.68KB   0 downloads    

What would be the correct way to close a mysql query?

At current the second query below returns results from the 1st query AND the 2nd query
The 3rd query returns results from the 1st, 2nd and 3rd query.
 etc etc.

At the moment I get somthing returned along the lines of...

QUERY 1 RESULTS
Accommodation 1
Accommodation 2
Accommodation 3

QUERY 2 RESULTS
Restaurant 1
Restaurant 2
Restaurant 3
Accommodation 1
Accommodation 2
Accommodation 3

QUERY 3 RESULTS
Takeaways 1
Takeaways 2
Takeaways 3
Restaurant 1
Restaurant 2
Restaurant 3
Accommodation 1
Accommodation 2
Accommodation 3

Code: [Select]

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<?php 
  include($_SERVER['DOCUMENT_ROOT'].'/include/db.php');
?>
<title>Untitled Document</title>
<style type="text/css">
<!--
-->
</style>
<link href="a.css" rel="stylesheet" type="text/css" />
</head><body>
<div id="listhold">

<!------------------------------------------------------------------------------------------------------------------------------------------------------>

<div class="list"><a href="Placestostay.html">Places To Stay</a><br />
<?php
$title ="TITLE GOES HERE";
$query = mysql_query("SELECT DISTINCT subtype FROM business WHERE type ='Accommodation' AND confirmed ='Yes' ORDER BY name");
echo mysql_error();
while($ntx=mysql_fetch_row($query)) $nt[] = $ntx[0];
$i = -1;
foreach($nt as $value)
{$i++;
$FileName = str_replace(' ','_',$nt[$i]) . ".php";
$FileUsed = str_replace('_',' ',$nt[$i]);
echo "<a href='" . str_replace(' ','_',$nt[$i]) . ".php?title=$title&subtype=$FileUsed'>"  . $nt[$i] . "</a>" . "<br/>";
$FileHandle = fopen($FileName, 'w') or die("cant open file");
$pageContents = file_get_contents("header.php");
fwrite($FileHandle,"$pageContents");}
fclose($FileHandle);
?>
</div>

<!------------------------------------------------------------------------------------------------------------------------------------------------------>

<div class="list"><a href="Eatingout.html">Eating Out</a><br />
<?php
$title ="TITLE GOES HERE";
$query = mysql_query("SELECT DISTINCT subtype FROM business WHERE type ='Restaurant' AND confirmed ='Yes' ORDER BY name");
echo mysql_error();
while($ntx=mysql_fetch_row($query)) $nt[] = $ntx[0];
$i = -1;
foreach($nt as $value)
{$i++;
$FileName = str_replace(' ','_',$nt[$i]) . ".php";
$FileUsed = str_replace('_',' ',$nt[$i]);
echo "<a href='" . str_replace(' ','_',$nt[$i]) . ".php?title=$title&subtype=$FileUsed'>"  . $nt[$i] . "</a>" . "<br/>";
$FileHandle = fopen($FileName, 'w') or die("cant open file");
$pageContents = file_get_contents("header.php");
fwrite($FileHandle,"$pageContents");}
fclose($FileHandle);
?>
</div>

<!------------------------------------------------------------------------------------------------------------------------------------------------------>

<div class="list"><a href="Eatingin.html">Eating In</a><br />
<?php
$title ="TITLE GOES HERE";
$query = mysql_query("SELECT DISTINCT subtype FROM business WHERE type ='Takeaways' AND confirmed ='Yes' ORDER BY name");
echo mysql_error();
while($ntx=mysql_fetch_row($query)) $nt[] = $ntx[0];
$i = -1;
foreach($nt as $value)
{$i++;
$FileName = str_replace(' ','_',$nt[$i]) . ".php";
$FileUsed = str_replace('_',' ',$nt[$i]);
echo "<a href='" . str_replace(' ','_',$nt[$i]) . ".php?title=$title&subtype=$FileUsed'>"  . $nt[$i] . "</a>" . "<br/>";
$FileHandle = fopen($FileName, 'w') or die("cant open file");
$pageContents = file_get_contents("header.php");
fwrite($FileHandle,"$pageContents");}
fclose($FileHandle);
?>
</div>

<!------------------------------------------------------------------------------SKILLED TRADES BELOW--------------------------------------------------->

<div class="list"><a href="Skilledtrades.html">Skilled Trades</a><br/>
<?php
$title ="TITLE GOES HERE";
$query = mysql_query("SELECT DISTINCT subtype FROM business WHERE type ='Skilled Trades' AND confirmed ='Yes' ORDER BY name");
echo mysql_error();
while($ntx=mysql_fetch_row($query)) $nt[] = $ntx[0];
$i = -1;
foreach($nt as $value)
{$i++;
$FileName = str_replace(' ','_',$nt[$i]) . ".php";
$FileUsed = str_replace('_',' ',$nt[$i]);
echo "<a href='" . str_replace(' ','_',$nt[$i]) . ".php?title=$title&subtype=$FileUsed'>"  . $nt[$i] . "</a>" . "<br/>";
$FileHandle = fopen($FileName, 'w') or die("cant open file");
$pageContents = file_get_contents("header.php");
fwrite($FileHandle,"$pageContents");}
fclose($FileHandle);
?>
</div>

I have two button that load the next and previous pages of friends, I'm having trouble doing so, it sort of works, but it's got bugs so it's not right.

Next:
Code: [Select]
$query = mysql_query("SELECT * FROM friends WHERE (friend_1='".$id."' OR friend_2='".$id."') AND id>$last_id ORDER BY id ASC LIMIT 16");previous:
Code: [Select]
$query = mysql_query("SELECT * FROM friends WHERE (friend_1='".$id."' OR friend_2='".$id."') AND id<$last_id ORDER BY id ASC LIMIT 16");
$id = id of the users profile.
$last_id = the last loaded friend id (unique id to friends table , not the friends actual id)

Can someone please give me some ideas as to what might be wrong with this query...I keep getting no result and am echoing $count for debugging (and usernames and passwords) but get nothing for $count (expecting a 0 or a 1) or $dbusername or $dbpassword

$sql="SELECT * FROM `users` WHERE `User name` = '$fusername' and `Password` = '$fpassword'";
$result=mysql_query($sql);

$dbusername=mysql_result($result,0,"User name");
$dbpassword=mysql_result($result,0,"Password");

echo $dbusername;
echo $dbpassword;


// Mysql_num_row is counting table row
$count=mysql_num_rows($result);

// If result matched $fusername and $fpassword, table row must be 1 row

echo $fusername;
echo $fpassword;
echo $count;

if($count==1){                                               (This is where I keep going to the else)

quick question,
I have this code that returns over 100 buttons:
Code: [Select]
        <?php
// Query member data from the database and ready it for display
$sql = mysql_query("SELECT * FROM products");
while($row = mysql_fetch_array($sql)){
$product = $row["product"];
$id =$row["id"];
$price =$row["price"];

?>
    <div id="products">
      <form action="" method="POST" name="myform<?php echo $id; ?>" class="myform<?php echo $id; ?>">
        <input type="hidden" name="hiddenField" class="hiddenField" value="<?php echo $product; ?>" />
        <input type="hidden" name="hiddenField2" class="hiddenField2" value="<?php echo $id; ?>" />
        <input type="hidden" name="hiddenField1" class="hiddenField1" value="<?php echo $price; ?>" />
      <input type="submit" name="submit" class="submit" value="<?php echo $product; ?>" style="background-color:lightgreen; height:50px; width:100px;">   </form>
    </div>   
<?php

}
?>
What I would like is for the buttons to form columns of nine. ie 9 buttons in a column then a new column form....  how do I do this?

I was just wondering if this is a way that you can exclude certain rows from a MySQL query.  For example if I have 10 records each with a unique id, is there anyway I can get all of the records except record 5?  Thanks for any help.   

Hi all,
I'm new to php and I was trying to send the results of one query to another query. I need the results of both queries.
Here are the queries

$cui1 = mysql_query("SELECT DISTINCT CUI FROM MRSTY WHERE STY='ABC' ");

$cui2 = mysql_query("SELECT DISTINCT CUI FROM MRSTY WHERE STY='XYZ' ");

I want to know if this is possible
$cuis = mysql_query("SELECT CUI1,CUI2,REL FROM MRREL WHERE CUI1 IN $cui1 OR CUI1 IN $cui2 ");

Thanks.

If ($_GET['CODE'] == '1') {
    $ThreadID = mysql_escape_string($_GET['threadid']);
    $ForumID = mysql_result(mysql_query("SELECT forum_id FROM ".FORUM_THREADS." WHERE thread_id='{$ThreadID}'", $db), 0, 'forum_id');
    $PostText = mysql_escape_string($_POST['replytext']);
    $IP = $_SERVER['REMOTE_ADDR'];
    $PostQuery = "INSERT INTO ".FORUM_POSTS." (`user_id`, `thread_id`, `post_text`, `forum_id`, `ip_address`, `timestamp`) VALUES ('{$memid}', '{$ThreadID}', '{$PostText}', '{$ForumID}', '{$IP}' , CURRENT_TIMESTAMP)";
    $PostRes = mysql_query($PostQuery, $db);


For some reason whenever this query goes through, it also adds a blank result using all the same information but without any $PostTest so essentially it does query:

Code: [Select]
INSERT INTO ".FORUM_POSTS." (`user_id`, `thread_id`, `post_text`, `forum_id`, `ip_address`, `timestamp`) VALUES ('{$memid}', '{$ThreadID}', '', '{$ForumID}', '{$IP}' , CURRENT_TIMESTAMP)

This is the only query that does this part of the code and I can't see why it is adding 2 queries.

FORUM_POSTS = constant containing table name.

Hi I have a query where it returns a few fields based on the location. I created a class for the function and an index page. It does not return any values. Can someone please advise/

THE CLASS
Code: [Select]

<?php

/****************************************

* 

* WIP Progress Class

*



* 

****************************************/



class CHWIPProgress {



var $conn;



// Constructor, connect to the database

public function __construct() {

require_once "/var/www/reporting/settings.php";

define("DAY", 86400);

if(!$this->conn = mysql_connect(DB_HOST, DB_USERNAME, DB_PASSWORD)) die(mysql_error());

if(!mysql_select_db(DB_DATABASE_NAME, $this->conn)) die(mysql_error());

}



public function ListWIPOnLocation($location) {

$sql = "SELECT 

 `ProgressPoint.PPDescription` AS Description ,`Bundle.WorksOrder` AS WorksOrder, `Bundle.BundleNumber` AS Number, `Bundle.BundleReference` AS Reference,`TWOrder.DueDate` AS Duedate

FROM `TWOrder`,`Bundle`,`ProgressPoint`

                        WHERE `Bundle.CurrentProgressPoint`=`ProgressPoint.PPNumber`

  AND `TWOrder.Colour=Bundle.Colour`

AND `TWOrder.Size=Bundle.Size`

                        AND `TWOrder.WorksOrderNumber`=`Bundle.WorksOrder`

                        AND `ProgressPoint.PPDescription` LIKE '" . $location . "%'

ORDER BY TWOrder.DueDate DESC";

mysql_select_db(DB_DATABASE_NAME, $this->conn);

$result = mysql_query($sql, $this->conn);
                        echo $sql; 

while($row = mysql_fetch_array($result, MYSQL_ASSOC)) {

$return[] = $row;

}

return $return;



}





}

?>



The index page
Code: [Select]
<?php



// First of all initialise the user and check for permissions

require_once "/var/www/users/user.php";

$user = new CHUser(7);

       



// Initialise the template

require_once "/var/www/template/template.php";

$template = new CHTemplate();



// And create a cid object

        require_once "/var/www/WIPProgress/DisplayWIPOnLocation.php";

$WIPProgress= new CHWIPProgress();



        $content = "Check WIP Status on Location <br>";



        $content = "<form action='index.php' method='get' name ='location'>

                    <select id='location' >

      <option>Skin Room</option>

                    <option>Clicking</option>

                    <option>Kettering</option>

    <option>Closing</option>

                    <option>Rushden</option>

                    <option>Assembly</option>

                    <option>Lasting</option>

                    <option>Making</option>

                    <option>Finishing</option>

                    <option>Shoe Room</option> 

                     </select>

                     <input type='submit' />

                     </form>"; 




      $wip = $WIPProgress->ListWIPOnLocation($_GET['location']);
      
     // Now show the details

$content .= "<h2>Detail</h2>

<table>

<tr>

<th>PPDescription</th>

<th>Works Order</th>                 

<th>Bundle Number</th>

<th>Bundle Reference</th>
                                <th>Due Date</th>  

</tr>";

foreach($wip as $x) {

$content .= "<tr>

<td>" . $x['Description'] . "</td>

<td>" . $x['WorksOrder'] . "</td>

<td>" . $x['Number'] . "</td>
<td>" . $x['Reference'] . "</td>
                                                <td>" . $x['DueDate'] . "</td>

</tr>";

}

 




$template->SetTag("content", $content);

echo $template->Display();





?>


thank you

this is my query code
Code: [Select]
<?php
$wsi_query = "(SELECT * FROM (SELECT a.no_Yards AS 'yards', a.Day_Swam AS 'date', a.Season AS 'season', (SELECT sum(no_yards) FROM swimming WHERE Season = '$ws') AS 'totalyards', (SELECT AVG(no_Yards) FROM swimming WHERE Season = '$ws') AS 'avg', (SELECT count(*) FROM swimming WHERE Season ='$ws') AS 'timelaps', (SELECT 1 + count(*) FROM swimming b WHERE b.no_Yards > a.no_Yards AND Season = '$ws') AS hrank, (SELECT 1 + count(*) FROM swimming b WHERE b.no_Yards < a.no_Yards AND Season = '$ws') AS lrank FROM swimming  AS a) AS x WHERE Season = '$ws' )";
$wsi_result = mysql_query($wsi_query) or die("Query failed ($wsi_query) - " . mysql_error());
$wsi_row = mysql_fetch_assoc($wsi_result);
?>
what it should do is output both the min and the max values like this
Code: [Select]
<?php
while ($mm_wsi_row = mysql_fetch_assoc($wsi_result)){
if ($mm_wsi_row['hrank'] == 1){
if ($mm_wsi_row['date'] == "0000-00-00"){$dayswam = "";}else{$dayswam = $mm_wsi_row['date'];}
echo "<tr>";
echo "<td style='background-color:#F90'>Max Length:</td>";
echo "<td>" . number_format($mm_wsi_row['yards']) . "</td>";
echo "<td>" . $dayswam . "</td>";
echo "</tr>";
}
 if($mm_wsi_row['lrank'] == 1){
if ($mm_wsi_row['date'] == "0000-00-00"){$dayswam = "";}else{$dayswam = $mm_wsi_row['date'];}
echo"<tr>";
echo "<td style='background-color:#F90'>Min Length:</td>";
echo "<td style='background-color:#FF9'>". number_format($mm_wsi_row['yards']) . "</td>";
echo "<td style='background-color:#FF9'>" . $dayswam . "</td>";
echo "</tr>";
}
?>
the problem is that it doesn't work right all the time for some it just shows the min while others it just shows max I've tested the query in MySQL workbench so i know that that is working right but idk why it works right for some and doesn't work for others

Code: [Select]
$PlayerQuery = "SELECT FirstName, SurName FROM players p, rounds m, entrants e, games t WHERE p.PlayerID = e.PlayerID AND m.GameID = '$ID' AND e.EntrantID = m.Player";
$PlayerResult = mysql_query($PlayerQuery);
$PlayerRow = mysql_num_rows($PlayerResult);

Can someone suggest why this returns game*the number of results. For each new game it returns an extra duplicate result. For example for 2 games:
j Smith
j Smith
t John
t John etc

There are no duplicate entry's! and results should be unique.  Not in a loop (positive)

Below is my query which works fine:

 $query = "
          SELECT st.CourseId, c.CourseName, st.Year, st.StudentUsername, st.StudentForename, st.StudentSurname,
          s.ModuleId, m.ModuleName, m.Credits, s.SessionId, s.SessionWeight, gr.Mark, gr.Grade
          FROM Course c
          INNER JOIN Student st ON c.CourseId = st.CourseId
          JOIN Grade_Report gr ON st.StudentId = gr.StudentId
          JOIN Session s ON gr.SessionId = s.SessionId
          JOIN Module m ON s.ModuleId = m.ModuleId
          WHERE
          (st.StudentUsername = '".mysql_real_escape_string($studentid)."')
          ";

Below is my results outputted by using php:

    Course: INFO101 - Bsc Information Communication Technology Year: 3
    Student: Mayur Patel (u0867587)
   
    Module: CHI2550 - Modern Database Applications
    Session: AAB 72 (A)
   
    Course: INFO101 - Bsc Information Communication Technology Year: 3
    Student: Mayur Patel (u0867587)
   
    Module: CHI2513 - Systems Strategy
    Session: AAD 61 (B)
   
    Course: INFO101 - Bsc Information Communication Technology Year: 3
    Student: Mayur Patel (u0867587)
   
    Module: CHI2550 - Modern Database Applications
    Session: AAE 67 (B)

How do I display it using php so that it only shows Course details and Student details only once, it will show each module in the course only once and shows each session being below each module it belongs to:

The output from above should look like this in other words:

     Course: INFO101 - Bsc Information Communication Technology Year: 3
        Student: Mayur Patel (u0867587)
       
        Module: CHI2550 - Modern Database Applications
        Session: AAB 72 (A)
        Session: AAE 67 (B)
       
        Module: CHI2513 - Systems Strategy
        Session: AAD 61 (B)


PHP code to output the results:

    $output1 = "";
   
            while ($row = mysql_fetch_array($result)) { //$result is the query
              
        $output1 .= "
             <p><strong>Course:</strong> {$row['CourseId']} - {$row['CourseName']} <strong>Year:</strong> {$row['Year']}<br/>
              <strong>Student:</strong> {$row['StudentForename']} {$row['StudentSurname']} ({$row['StudentUsername']})
              </p>";
             
        $output1 .= "     
        <p><strong>Module:</strong> {$row['ModuleId']} - {$row['ModuleName']} <br/>
              <strong>Session:</strong> {$row['SessionId']} {$row['Mark']} ({$row['Grade']})
              </p>";
                }
               
                echo $output1;

Thank You